Amateur Radio Weekly – Issue 203
Shortwave Trading: The West Chicago Tower Mystery
I recently stumbled onto the first evidence of shortwave trading at a site in West Chicago, Illinois and then used Federal Communications Commission (FCC) database research techniques to find two more sites.
Sniper In Mahwah & friends
2018 State of the Hobby Results
The results are in!
State of the Hobby
6m Moxon antenna
The SWR figures predicted are pretty much spot on, with a dip right around 51250.
NY4G
FreeDV 700D vs Analog Comparison
A comparison between Analog SSB and the new FreeDV 700D mode, over an HF channel (40m, late at night), with the same transmit power (~100W PEP).
Mark Jessop
Nixie LED Clock
I built an alternative clock using a 3D printer and laser cutter.
SparkFun
The Boris Beacon
A 1mW solar-powered HiFER beacon.
AA7EE
Radio receiver ‘listens’ for dark matter particles
We’ve built a radio that looks for a radio station, but we don’t know its frequency.
Futurity
Parity Act language inserted in National Defense Authorization Act
The bill now awaits House floor action. The Senate will begin its markup of the NDAA during the week of May 21.
ARRL
OLED GPS display on Arduino with a little C++
I’ve written a little code to read the $4.10 GPS and display a bit of info on a small OLED display using the excellent Adafruit library.
marxy’s musing on technology
Video
Receiving Radio New Zealand 15720khz in Santa Cruz, CA on a Hallicrafters S-38
What Radiohead sounds like from 6,500 miles away on a 62 year old shortwave radio.
YouTube
4m parrot repeater
Testing GB7FM 4m simplex repeater, fondly known as the Tring Parrot.
M0JCQ
Amateur Radio Weekly is curated by Cale Mooth K4HCK. Sign up free to receive ham radio's most relevant news, projects, technology and events by e-mail each week at http://www.hamweekly.com.
LHS Episode #225: Gpredict Deep Dive
Welcome to another exciting episode of the most terrific podcast on the Internet today. In this episode, the hosts discuss using gpredict for satellite tracking, rig control and rotor contol. They also delve into some of the complexities of and rewards to satellite communication in amateur radio. Thank you for listening and see you in Xenia.
73 de The LHS Crew
Russ Woodman, K5TUX, co-hosts the Linux in the Ham Shack podcast which is available for download in both MP3 and OGG audio format. Contact him at [email protected].
Weekly Propagation Summary – 2018 May 07 16:10 UTC
Here is this week’s space weather and geophysical report, issued 2018 May 07 0147 UTC.
Highlights of Solar and Geomagnetic Activity 30 April – 06 May 2018
Solar activity was very quiet throughout the reporting period. Region 2706 (N03, L=281, class/area Dao/130 on 22 Apr) produced the strongest event of the past week, a B1 flare on 01/2115 UTC. Activity on the farside of the Sun produced a halo CME signature first observed in LASCO C2 imagery at 03/1712 UTC; however, no Earth-directed CMEs were observed in available coronagraph imagery.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit ranged from normal to moderate levels from 30 Apr to 05 May. Influence from a negative polarity CH HSS caused an increase to high levels on 06 May with a peak flux of 11,500 pfu observed at 06/2305 UTC.
Geomagnetic field activity was mostly quiet until 05 May, when enhancements in the solar wind from the onset of a negative polarity CH HSS increased geomagnetic activity to G1 (Minor) storm levels. A further increase to G2 (Moderate) geomagnetic storm levels were observed early on 06 May. Solar wind speeds peaked at just over 700 km/s and persisted just below 700 km/s through the end of the reporting period. Total field peaked during the CIR, with a maximum of 17 nT observed at 05/1340 UTC. The maximum southward value of Bz was -14 nT which was observed 05/1327 UTC.
Forecast of Solar and Geomagnetic Activity 07 May – 02 June 2018
Solar activity is expected to remain at very low levels over the next 27 days.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at moderate to high levels from 07-26 May and 02 Jun. Normal to moderate levels are expected over 27 May – 01 Jun. All enhancements in electron flux are attributed to the anticipation of influence from multiple, recurrent CH HSSs.
Geomagnetic field activity is expected to range from quiet to G2 (moderate) geomagnetic storm levels. G2 (Moderate) storm levels are likely on 17 May; G1 (Minor) storm levels are likely on 07 May and 02 Jun; active conditions are likely on 08-09 May, 18 May and 01 Jun; unsettled levels are likely on 10 May and 19 May. The remainder of the outlook period is expected to be mostly quiet. All enhancements to geomagnetic activity are due to multiple, recurrent CH HSSs.
Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/
Live Aurora mapping is at http://aurora.sunspotwatch.com/
If you are on Twitter, please follow these two users: 1. https://Twitter.com/NW7US 2. https://Twitter.com/hfradiospacewx
Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g
= = = = =
BOOK SALE: Space Weather and Sun Science – get these from Amazon, and help us stay online!
NOTICE: When you buy this (or any item after starting with this link), you are helping us keep our SunSpotWatch.com and other resources “on the air” (up and running!). In other words, you are helping the entire community. So, check out this book:
Here is the link to Amazon: http://g.nw7us.us/fbssw-aSWSC
We’re on Facebook: http://NW7US.us/swhfr
Visit, subscribe: NW7US Radio Communications and Propagation YouTube Channel
Triple D + 1 Special D-Star Forum
Triple D + 1 is live now.
www.live.amateurlogic.tv
George Thomas, W5JDX, is co-host of AmateurLogic.TV, an original amateur radio video program hosted by George Thomas (W5JDX), Tommy Martin (N5ZNO), Peter Berrett (VK3PB), and Emile Diodene (KE5QKR). Contact him at [email protected].
Amateur Radio Weekly – Issue 202
The Horror-Mitters
A working tuneable FM transmitter for the two meter amateur using only found junk and components scavenged from old television sets.
VK3ZZC
Developer says he has purchased Hara Arena
Michael Heitz, a Lexington based developer, has bought Hara Arena.
Dayton Daily News
Don’t buy into the doom-and-gloom: Low sunspots are not the end
Here are a few strategies for working DX during sunspot lows.
The SWLing Post
Children’s book features Amateur Radio and space communications
Ada Lace, Take Me to Your Leader is a new book written for young people by Emily Calandrelli KD8PKR that features amateur radio and space communications.
AMSAT-UK
Ham Radio operators help save lives in tinder fire
Communication troubles began because of poor cell service at the fire line.
KVOA
Build your own 18650 LiFePO4 battery pack, no soldering
18650 batteries are a cost effective way to power our communications gear out in the field.
OH8STN
Ham!
Ham.
Ham Button
Designing a satellite station for the home QTH
Working SSB satellites from home is a bit more complicated, especially as I wish to automate a lot of what happens, especially the automatic tracking of the satellites during passes.
Adventures in Ham Radio
Video
Hand made vacuum tubes
Hand made vacuum tubes by Claude Paillard
Vimeo
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Amateur Radio Weekly is curated by Cale Mooth K4HCK. Sign up free to receive ham radio's most relevant news, projects, technology and events by e-mail each week at http://www.hamweekly.com.
The Spectrum Monitor — May, 2018
Stories you’ll find in our May, 2018 issue:
TSM Reviews: FlexRadio 6400M All-Mode HF+6 Transceiver
By Mark Haverstock K8MSH
While computer control has become integrated into amateur radio transceivers in recent years, there is still a substantial faction of amateur radio operators who want to hold onto the traditional buttons and knobs of their radios. FlexRadio’s new additions to the Signature Series give amateurs both options. The base Flex 6400 model is computer controlled, but they’ve also created an M version (M for Maestro) with traditional knobs, buttons and a touch display screen as well. The 6400M is an improved version of the 6300, with better specs, processors, and costs $500 less—at a price tag of $2000. It borrows features from both the 6300 and 6500 (both of which were recently discontinued). Note that the 6400 and 6400M models are identical, with the exception of the Maestro control interface. But, you’ll need to find a little extra table space at the operator’s position—it is bigger than a breadbox, with both the basic 6400 and the M versions have the same footprint and measure 7 x 14 x 13.125 inches. Mark unpacks the details of this modern and very capable HF+6 transceiver
Giving Undersea Cable its Just Deserts – 160 Years Past Due
By Richard Fisher KI6SN
Marconi got the hoopla for the first trans-Atlantic wireless communication. His transmission of the Morse letter S sped through the airwaves between the Canadian maritime province of Newfoundland and Cornwall, England, in the waning days of 1901. But 43 years earlier – in 1858 – it was New York businessman Cyrus Field who was the impetus behind the remarkable achievement of the first telegraphy Communications between two continents—Newfoundland to Ireland—under the sea. Why no such accolades for Cyrus in reciting the technological achievements in communication of the mid-19th and early-20th centuries, 160 years ago, no less? Richard dives deep to find an amazing web of undersea cables stretching around the entire globe—an vital part of modern communications.
TSM Reviews: Yaesu FTM-750DR VHF/UHF Transceiver
By Cory GB Sickles WA3UVV
Yaesu recently introduced and is now shipping another System Fusion transceiver – the FTM-7250 mobile. As this month’s installment of Digitally Speaking covers connectors and genders, perhaps the simplest way to describe the ‘7250 is for you to imagine that the FTM-3200 (VHF) and FTM-3207 (UHF) monobanders got together and had a baby. With the April release of the FTM-7250, Yaesu now offers a total of eight radios, with an even split between entry-level transceivers with “core” features and those with advanced-level feature sets. Think about that for a moment. Eight radios, plus two repeaters and two different networking concepts. That’s a fairly diverse selection of equipment – not to mention the various means of third-party support for this DV methodology – that is only four years old, from the time of its full release.
Free-to-Air Satellite-TV List Update
By Mike Kohl
Free-to-Air (FTA) satellite-TV enthusiasts sometimes have a challenge keeping track of satellite names and positions. Throughout the years aerospace companies merge, creating new names for their fleet, or launch a new series of satellites, reflecting advances in technology. This month, Mike has created an updated list for North American FTA viewers covering eastern Atlantic arc satellites from 1.0 degrees West longitude, across our domestic satellite arc, and extending to 166 East, which can be received by those with a 3 to 4 meter C-band dish from unobstructed locations on the West Coast. In addition to updating the list of names to reflect mergers and acquisitions in the industry and new satellites replacing old, Mike gives you tips on aligning fixed and steerable dishes.
Scanning America
By Dan Veeneman
Sublette County, Wyoming; Washoe County, Nevada
Federal Wavelengths
By Chris Parris
USS Portland HYDRA System
Milcom
By Larry Van Horn N5FPW
Military Base Profile: Edwards AFB (KEDW)
Utility Planet
By Hugh Stegman NV6H
Doing Battle with STANAG 4285
Shortwave Utility Logs
Compiled by Hugh Stegman and Mike Chace-Ortiz
VHF and Above
By Joe Lynch N6CL
West Point Cadets Launch Two Balloons
Digitally Speaking
By Cory Sickles WA3UVV
Goes Inta / Goes Outta
Amateur Radio Insights
By Kirk Kleinschmidt NT0Z
Feed Line Ferrite Chokes—Noise Reduction that Beats the Best DSP?
Radio 101
By Ken Reitz KS4ZR
Gospell AM/FM/SW/DRM Receiver
Radio Propagation
By Tomas Hood NW7US
The Switch in May
The World of Shortwave Listening
By Jeff White, Secretary-Treasurer NASB
Shortwave Broadcasters and Listeners to Meet in Indiana
The Shortwave Listener
By Fred Waterer
Voice of Greece, Radio Tirana, and Country Music on Shortwave
Amateur Radio Astronomy
By Stan Nelson KB5VL
NAVSPASUR Revisited
The Longwave Zone
By Kevin O’Hern Carey WB2QMY
Bill Oliver—Quiet Giant of Longwave
Adventures in Radio Restorations
By Rich Post KB8TAD
A Not-so-Scarce Hallicrafters: Model SX-99
The Spectrum Monitor is available in PDF format which can be read on any desktop, laptop, iPad®, Kindle® Fire, or other device capable of opening a PDF file. Annual subscription is $24. Individual monthly issues are available for $3 each.
Ken Reitz, KS4ZR, is publisher and managing editor of The Spectrum Monitor. Contact him at [email protected].
LHS Episode #224: The Weekender IX
Welcome to the newest edition of Linux in the Ham Shack, Weekender Edition. In this episode, we have a special interview with our friend Carter Hutchinson, K9KJN, who has a varied and very interesting back story and current story. We also discuss upcoming ham radio contests, special events, Open Source conferences, obscure Linux distributions, listener challenges, wine, food and song. Everything to keep you going for the next two weeks. Thanks for listening and see you in Xenia!
73 de The LHS Crew
Russ Woodman, K5TUX, co-hosts the Linux in the Ham Shack podcast which is available for download in both MP3 and OGG audio format. Contact him at [email protected].















